2525552778 has 32 divisors (see below), whose sum is σ = 5778455040. Its totient is φ = 720866160.

The previous prime is 2525552737. The next prime is 2525552803. The reversal of 2525552778 is 8772555252.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13293 + ... + 72303.

It is an arithmetic number, because the mean of its divisors is an integer number (180576720).

Almost surely, 2^2525552778 is an apocalyptic number.

2525552778 is an abundant number, since it is smaller than the sum of its proper divisors (3252902262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2525552778 is a wasteful number, since it uses less digits than its factorization.

2525552778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60042.

The product of its digits is 1960000, while the sum is 48.

The square root of 2525552778 is about 50254.8781512800. The cubic root of 2525552778 is about 1361.8172035226.

The spelling of 2525552778 in words is "two billion, five hundred twenty-five million, five hundred fifty-two thousand, seven hundred seventy-eight".